Rocket-exhaust impingement on a flat plate at high vacuum.

Impact of Stagnation Temperature and Nozzle Configuration on Rarefied Jet Plume Interactions

“…In this case, the consistency of dsmcFoam+ results with the mesh topologies of axisymmetric and half-symmetry are compared with Refs. [8], [9], and [10] for the normal impingement of an exhaust plume on the surface at 𝑇 0 of 300 K. The simulations are carried out with 7.5×10 4 , 1.1×10 5 , and 2.2×10 5 DSMC particles for the axisymmetric mesh, and 17.2×10 6 for half-symmetric mesh. The axisymmetric mesh solutions are run until the time of 0.005 s, and the half-symmetric simulation is kept running until 0.00125 s. The sampling procedure is started as soon as possible once the simulations become steady-state.…”

“…Ref. [1] and for various impingement scenarios, such as perpendicular impingement to the surface [5], laterally located thrusters on the sides of platform bodies [6,7], and for nozzles positioned at an angle to the surface [8][9][10]. These studies contribute a better understanding for some problems in application.…”